Abstract:
A system has a mobile robot for autonomously performing activities and a statically fitted alarm installation for monitoring an area. Accordingly, the robot and the alarm installation communicate with one another via a communication link. The mobile self-propelled robot uses a map of the environment to navigate across a floor space through at least a portion of the area and to locate its position on the map. Triggering of an alarm by the alarm installation is prevented when the robot moves into the area to be monitored. The triggering of the alarm by the alarm installation is made possible again when the robot moves out of the area to be monitored.
Abstract:
A security light system includes a plurality of light fixtures, whereby each light fixture has a light module including an infrared light and an LED that generates white light. Each light fixture includes a driver circuit for controlling operation of the infrared light and the LED. The system includes a light intensity controller for communicating with each light fixture. The light intensity controller includes a control element that enables an operator to selectively increase and decrease the intensity level of the infrared and white light generated by the infrared light and the LED.
Abstract:
An exemplary aspect comprises an apparatus comprising: (a) a microprocessor; (b) a wireless transmitter/receiver in communication with the microprocessor and operable to communicate over a wireless network with an application on a mobile device; (c) a light sensor in communication, via the microprocessor and the transmitter/receiver, with the application, and operable to detect and report ambient light levels in a vicinity of the apparatus; and (d) an accelerometer in communication, via the microprocessor and the transmitter/receiver, with the application, and operable to detect and report motion of the apparatus. In various exemplary embodiments, the apparatus may further comprise (and/or instead comprise): (1) a temperature sensor; (2) a humidity sensor; (3) a microphone; and/or (4) a passive infrared sensor.
Abstract:
This disclosure examines using lead telluride nanocrystals as well as other materials suitable for thermoelectric conversion, particularly materials with high Figure of Merit values, as coatings on flexible substrates. This disclosure also examines using flexible substrates with lead telluride nanocrystal coatings as sensors.
Abstract:
According to certain embodiments, paths are identified from path data. One or more sensors are assigned to each path. The following are performed: at least one sensor is moved to a path intersection and excess sensors are removed. An excess sensor is a sensor that is not required to satisfy the desired number of sensors of one or more paths. According to certain embodiments, a combined array comprising combined entries is accessed. Each combined entry represents a location and has a value indicating a number of paths at the location. The following are performed to yield a sensor arrangement: a maximum value of the combined array is identified, a sensor is assigned to a location associated with the maximum value, and the paths are removed from the combined array. A result associated with the sensor arrangement is reported.
Abstract:
An intruder detection system is provided in which a detection range can be set to a predetermined one so that false detection caused by a moving object outside the predetermined range can be diminished. The system includes a transmission-side leaky transmission line that radiates a detection signal for detecting an intruder and a reception-side leaky transmission line that receives a detection signal leaked from the transmission-side leaky transmission line, both of which are buried spaced apart from each other in a detection surveillance area, and detects the presence/absence of an intruder in the detection surveillance area based on variations in the detection signal received by the reception-side leaky transmission line, wherein at least part of either the transmission-side leaky transmission line or the reception-side leaky transmission line is made of a surface-wave-type leaky coaxial transmission line, and the other leaky transmission line, a radiation-type leaky coaxial transmission line.
Abstract:
A quickly deployable and reconfigurable light emitting diode (LED) lighting apparatus with high output intensity and precisely controlled beam property is disclosed for navigational aids. The lighting apparatus comprises an array of high intensity LED units with their light beams individually controlled by secondary optical systems. The transformed light beams mix in a pre-determined manner to produce an illumination pattern with desired intensity distribution. The LED lighting apparatus may further comprise a micro-controller, a plurality of sensor elements, and a wireless transceiver for remote monitoring and control. The lighting apparatus can be powered by rechargeable batteries for temporary or semi-permanent lighting. It can also be powered by standard power lines for permanent lighting.
Abstract:
A system and method for detecting an object on a cart, including a support structure, a cart detector and an object detector provided to the support structure and an alert device. The cart detector including a first sensor and a second sensor that are positioned to detect predetermined cart portions as a cart transitions from the first sensor to the second sensor. The object detector including a third sensor and a fourth sensor positioned to approximately simultaneously detect an object on the cart while not detecting upright elements of the cart. Preferably, the cart sensors and object sensors also measure distances to obstructions so that the distances can also be analyzed to determine that a cart and/or object is present.
Abstract:
An object detection system is provided that projects one or more patterns onto a monitored area, captures one or more live images of the monitored area, and detects objects that enter the monitored area by detecting changes in the one or more patterns in the live images. Such an object detection system may be less susceptible to dynamic lighting conditions, and more sensitive to object intrusions. One illustrative example projects a pattern of dots onto an area to be monitored, and captures images corresponding to the monitored area, comparing live images to reference images to determine whether an object has intruded a defined area. The area to be monitored does not consist solely of the area captured in the images and may include a volume illuminated by the pattern as well as a volume corresponding to the captured image area. Objects not in the field of view may be detected by the disclosed systems and methods. Several illustrative analytical methods are disclosed as well.
Abstract:
A passive infrared motion detection system is provided with means for detecting increases and/or decreases in the sensor or system sensitivity by a predetermined amount vis-a-vis a nominal level. Various schemes are disclosed for implementing this concept.